Oxidation of Methyl Linoleate in Oil-in-Water Micro- and Nanoemulsion Systems |
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Authors: | Haruka Imai Tetsuzo Maeda Motohiro Shima Shuji Adachi |
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Affiliation: | (1) Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan |
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Abstract: | Oxidation of methyl linoleate in O/W emulsions having droplets of median diameters ranging from 17 nm to 8.0 μm was carried
out at 40°C. The oxidation process was analyzed on the basis of a kinetic equation of the autocatalytic type. The induction
period was found to be shorter and the oxidation rate constant lower for emulsions with smaller oil droplets. The stoichiometry
between methyl linoleate and oxygen was observed to be independent of both the size of oil droplet and the type of the surfactant
and was found to be unity during the early stage of the oxidation. However, more oxgen was consumed in the oxidation of the
methyl linoleate in the later half of the oxidation process. |
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Keywords: | Nanoemulsion Lipid oxidation O/W emulsion Methyl linoleate |
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